Sparking device for engines.



PATENTED JAN. 30, 1906. J. E. WORTH & W. B. ETEN. SPARKINGDEVIGE FORENGINES.

APPLICATION FILED MAY 15, 1905.

Attorneys Jamal? W OT'Z/L Witnesses UNITED" STATES PATENT OFFICE.

JAMES E. WORTH AND WILLIAM B; ETEN, OF FANOYHILL, VIRGINIA.

' SPARKING DEVICE FOR ENGINES.

Specification of Letters Patent.

Application filed May 15, 1905s SerialNo. 260.536.

Patented Jan. 30, 1906.

To a whom it may concern: Y

Be it known that we, J AMES E. WORTH andj WILLIAM B. ETEN, citizens ofthe United States, residing at Fancyhill, in the county of Rockbridgeand State of Virginia, have invented a new and useful Sparking Devicefor Engines, of which the following is a specifica; tion.

This invention relates to sparking devicesfor internal-combustionengines, and has for its principal object to provide a novel means forproperly timing the spark so that the engine may be run in eitherdirection and the sparking effected at the proper time without renderingit necessary to adjust the position! of any of themembers of the sparkerpropen A further object of the invention is to pro-i vide a @mechanismwhich in adjusting the time of operation of the sparking device may beemployed as a means for reversing the direction of rotation of thecrank-shaft.

With these and other objects in view, as will more fully hereinaiterappear, the invention consists in certain novel features of constructionand arrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and particularly pointed out in theappended'claims, it beingunderstood that various changes in the form,proportions, size, and minor details of the structure may be madewithout departing from' the spirit or sacrificing any of the advantagesof the inven-' tion.

In the accompanying drawings, Figure 1 is a side elevation of suffioientof an internal-combustion engine to illustrate the application theretoof a sparkingdevice constructed in accordance with the invention, thecrankshaft being shown in section. Fig. 2 is a side elevation of thesame. Fig, 3 is adetail view of the sparking mechanism looking from theinterior of the explosion-chamber.

Similar numerals of reference are employed to'illustrate correspondingparts throughout the several figures of the drawings.

The working parts of the en e include the cylinder A and crank-shaft thelatter being connected to acounter-shaft G by reducing-gearing D, asusually practiced in fourcycle engines.

Passing through the wall of the explosionchamber is a rock-shaft 10,carrying at its inner end an electrode 11, whichmay be moved intoengagement with a second electrode 12,

these two electrodes being electrically con nected in a circuit 13,includinga source of electrical energy and a sparking coil. Surroundingthe rock-shaft is a spring 14, oneend of which bears against a fixed pin15 and the other against the electrode 11, the spring serving tomaintain the said electrode 11 in engagement with a stop 16.

To the outer end of the rock-shaft 10 is secured a gear 19, carryin aradially-projecting arm 20, that preferably is formed of yieldab ematerialas, for instance, a strip of spring-steel and with this arm engaes the upper end of a rod 21, the lower end 0? which I is secured to astrap 22, encirclin an eccentric 23 on the counter-shaft C, an each timethe shaft 0 is rotated the eccentric-rod will be moved up until the headof the rod elevates the arm 20 to an extent sufiicient to move theelectrode 11 into engagement with the electrode 12, further movementcausing the head of the rod to pass beyond the arm 20, where upon thespring 14 rapidly moves the rockshaft in the opposite direction and byseparating the electrodes creates a spark.

Secured to the cylinder or otherfixed porriable angle of the lower endof the rod due to its connection with the eccentric.

Mounted on a stud 30, that projects from the wall of the explosionchamberor cylinder, is a gear 31, carrying a radially-projectin arm 32,also preferably formed of s ring-steel adapted to be engaged by the hearof the rod 21 when the en ine is running in the reverse direction. Un ernormal conditions the gear 31 and arm 32 move idly, owing to-theconnection with the gear 19, and when the outer portion of the rod 21 isshifted to the dotted-line position shown in Fig. 1 the arm 32 will beengaged by the head of-the rod and the movement will be transmitted,through the gears 31 and 19, to the rock-shaft 10. In order toaccomplish the adjustment of the rod 21, a bell-crank lever 33 has onearm connected to the slide-block 26, and its opposite arm carries a bolt34, that may travel in an tion of the engine is a uide 25, arranged forthe reception of a slide 1e block 26, that cararcuate 'slot 35, formedina bar 36, secured versing-lever 33 may. be locked in any posi- IIOtion-to which it is adjusted, and by effecting close adjustment the timeof the spark may be altered to some eXtent-that is to say,

thehead of the rod 21 may be so adjusted as to leave either the arm orthe arm 32 at the full stroke of the eccentric or slightly before thefull stroke of the eccentric.

When the engine is running in one direc tion, the parts are arranged asshown in full lines in Fig. 1. To reverse, it is desirable, but notalways necessary, to cut off the supply of fuel and allow the enginetoslow down until on a compression --stroke 'thereis just sufficientmomentum to carry the iston to the to of the cylinder. The slide-b ock26 is then s fted'fromtheposition shown in the full lines in Fig. 1 tothe position shown in dotted lines, ithiswoccurring hefoie the pistonhas moved-fullyup, so-thatvas the piston moves up 'on the:compressionestroke the head of the and will engage the. arm 32and movetheelec- 'tro'd e l l'into engagement with theelsctrode '1 2,'and t h'enjust before the completion of the 'compre'ssion stro'lre the electrodeswill be-sep- :arated and the sparkwilloccur, efiecting rotativemove'ment ofthe shaft in the opposite,

direction.

"1. The-combinationina sparker, ofa pair cit-electrodes,- one of whichis movable, a 'rockshaft carrying the movable electrode, a yiel'dablearm- 'connected to :the rocloshaft, a, second shaft, alsohaving-a-yieldable arm, means forconnectingthe -two shafts, and.anoperating 'od adjustable to engage one or other-of said: arms.

2. The combination with a sparker including-arock shaft carrying oneofthe electrodes, a gearsecured to-the roclos'haft, a yieldab-le armextending'from the gear, a second gearintermeshiirg with the first andalso havinga yieldablearm', and: an operating-rod adjustable' toien' ageone or other of said-arms.

-. 3. l'fha'co mfiination in as arker, ofa rocks'haft carrying one ofthee ectrodes, a gear secured to the rock-shaft, a yieldable arm projectingfrom the gear, a second gear on gaging the first and also having ayieldable arm, a rod operated from the engine, and a rod-guideadjustable to-direct the rod into engagement with one or other of thearms.

4. In a sparker, a rock-shaft, a gear connected thereto, an armextending. from the gear, asecond gear intermeshing with the first andprovided with an extending arm, an endwise-movable rod operable from theenginc,-a guiding member for said rod, and means for adjusting theposition of said guiding member to direct the rod into engagement withone or other of the arms.

5. The combination in a sparker, of a rockshaft, an electrode carriedthereby, a gearwheel connected to the rock-shaft, anarm extending fromthe gear, a second gear intermeshing with the first and also having anextending arm, an endwise-movable rod 0 erated from the engine,-a guide,a slidable b ockmounted thereon, and a pivotally-1nounted rod-guidingmember connected to said block.

6. The combination in asparlcer, of a rockshaft, an electrode connectedthereto, a gear secured to the rock-shaft, an arin extending from'thegear, a second gear intermeshing with the first, and also provided witha PTO. jecting arm, an endwise-movable .rod operated from the engine, aguide, a slidableblock mounted therein, an adjustin -lever connect- 1 edto saidblock, means for loo ing the adjusting-lever in position, and apivotally-mount' ed rod-guiding member carried by said block.

In testimony that we claim the foregoing as our own we havehereto-affixed our signatures in the presence of two witnesses.

JAMES E. WORTH. WILLIAM BETEN.

